16th. Where two or more words, of two or three letters, follow each other, let them be joined together, viz. Cotton is on the rise, transposed, zqoq& wfq&ots lwfs.
17th. Make no separation between words of less than eight letters, viz. Cotton is on the rise, transposed, zqoq&wfq&otslwfs.
18th. Make no separation between words.
19th. Reverse the order of the letters of the whole message, viz. Cotton is on the rise, transposed and reversed, sfwl sto &q fw &qoqz.
20th. Change the key, alternately, every ten or fifteen words, using two keys.
21st. Let the two first letters of all words of four letters be affixed to the end of the preceding word, and the remaining two letters be prefixed to the word following, viz. stocks have fallen, transposed, foqzuftr gsxrvs&.
22d. Change the key irregularly, thus, for example, the first three words transpose from one key; the next three words from another key; the next three from another key, and so on.
23d. Reverse the termination of those words ending with tion, sion, ness, less, tive, ty, ly, ed, &c.
24th. Make a division of long words into two.
25th. Let those words which occur frequently and have only two or three letters remain unchanged, viz. to, a, the, of, and, for, with, &c.